import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import { resolve } from 'path'

export default defineConfig({
  plugins: [vue()],
  resolve: {
    alias: {
      '@': resolve(__dirname, 'src'),
      '@styles': resolve(__dirname, 'src/styles')
    }
  },
  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `@use "@styles/variables" as *;`
      }
    }
  },
  build: {
    lib: {
      entry: resolve(__dirname, 'src/index.js'),
      name: 'Vue3UiLibrary',
      fileName: (format) => `vue3-ui-library.${format}.js`,
      formats: ['es', 'umd']
    },
    rollupOptions: {
      // 确保外部化处理那些你不想打包进库的依赖
      external: ['vue'],
      output: {
        // 在UMD构建模式下为这些外部化的依赖提供一个全局变量
        globals: {
          vue: 'Vue'
        }
      }
    }
  }
})